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.NET FRAMEWORK CLEANUP TOOL USER'S GUIDE
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The latest version of this user's guide can be found at http://blogs.msdn.com/b/astebner/archive/2008/08/28/8904493.aspx.
The .NET Framework Repair Tool can be found at the following locations:
http://support.microsoft.com/kb/2698555
http://go.microsoft.com/fwlink/?LinkID=246062
Additional support can be obtained by visiting the .NET Framework setup forum at http://social.msdn.microsoft.com/Forums/en-US/netfxsetup/threads.
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INTRODUCTION
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This .NET Framework cleanup tool is designed to automatically perform a set of steps to remove selected versions
of the .NET Framework from a computer. It will remove files, directories, registry keys and values and Windows
Installer product registration information for the .NET Framework. The tool is intended primarily to return your
system to a known (relatively clean) state in case you are encountering .NET Framework installation,
uninstallation, repair or patching errors so that you can try to install again.
There are a couple of very important caveats that you should review before using this tool to remove any version
of the .NET Framework from your system:
* This tool is designed as a last resort for cases where install, uninstall, repair or patch installation did not
succeed for unusual reasons. It is not a substitute for the standard uninstall procedure. You should try the
steps listed in this blog post before using this cleanup tool.
* This cleanup tool will delete shared files and registry keys used by other versions of the .NET Framework. If
you run the cleanup tool, you will need to perform a repair/re-install for all other versions of the .NET
Framework that are on your computer or they will not work correctly afterwards.
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DOWNLOAD LOCATIONS
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The .NET Framework cleanup tool is available for download at the following locations:
http://cid-27e6a35d1a492af7.skydrive.live.com/self.aspx/Blog_Tools/dotnetfx_cleanup_tool.zip
http://blogs.msdn.com/astebner/attachment/8904493.ashx
The .zip file that contains the tool also contains a file named history.txt that lists when the most recent version
of the tool was published and what changes have been made to the tool over time.
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SUPPORTED PRODUCTS
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The .NET Framework cleanup tool supports removing the following products:
* .NET Framework - All Versions
* .NET Framework - All Versions (Tablet PC and Media Center)
* .NET Framework - All Versions (Windows Server 2003)
* .NET Framework - All Versions (Windows Vista and Windows Server 2008)
* .NET Framework 1.0
* .NET Framework 1.1
* .NET Framework 2.0
* .NET Framework 3.0
* .NET Framework 3.5
* .NET Framework 4
* .NET Framework 4.5
* .NET Framework 4.5.1
* .NET Framework 4.5.2
* .NET Framework 4.6
* .NET Framework 4.6.1
Not all of the above products will appear in the UI for the .NET Framework cleanup tool on every operating system.
The cleanup tool contains logic so that if it is run on an OS version that includes the .NET Framework as an OS
component, it will not offer the option to clean it up. This means that running the cleanup tool on Windows XP
Media Center Edition or Tablet PC Edition will not offer the option to clean up the .NET Framework 1.0, running
it on Windows Server 2003 will not offer the option to clean up the .NET Framework 1.1 and running it on Windows
Vista or Windows Server 2008 will not offer the option to clean up the .NET Framework 2.0 or the .NET Framework 3.0.
When choosing to remove any of the above versions of the .NET Framework, the cleanup tool will also remove any
associated hotfixes and service packs. You do not need to run any separate steps to remove the service pack(s)
for a version of the .NET Framework.
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SILENT MODE
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The .NET Framework cleanup tool supports running in silent mode. In this mode, the tool will run without showing
any UI, and the user must pass in a version of the .NET Framework to remove as a command line parameter. To run
the cleanup tool in silent mode, you need to download the cleanup tool, extract the file cleanup_tool.exe from
the zip file, and then run it using syntax like the following:
cleanup_tool.exe /q:a /c:"cleanup.exe /p <name of product to remove>"
The value that you pass with the /p switch to replace <name of product to remove> in this example must exactly
match one of the products listed in the Supported products section above. For example, if you would like to run
the cleanup tool in silent mode and remove the .NET Framework 1.1, you would use a command line like the following:
cleanup_tool.exe /q:a /c:"cleanup.exe /p .NET Framework 1.1"
One important note � as indicated above, the cleanup tool will not allow you to remove a version of the .NET
Framework that is installed as part of the OS it is running on. That means that even if you try this example
command line on Windows Server 2003, the tool will exit with a failure return code and not allow you to remove
the .NET Framework 1.1 because it is a part of that OS.
Similarly, you cannot use the cleanup tool to remove the .NET Framework 1.0 from Windows XP Media Center Edition
or Windows XP Tablet PC Edition or remove the .NET Framework 2.0 or 3.0 from Windows Vista or Windows Server 2008.
In addition, if you run the cleanup tool on an OS that has any edition of the .NET Framework installed as a part
of the OS, it will prevent you from using the .NET Framework - All Versions option because there is at least one
version that it cannot remove.
If you are planning to run the cleanup tool in silent mode, you need to make sure to detect what OS it is running
on and not pass in a version of the .NET Framework with the /p switch that is a part of the OS or make sure that
you know how to handle the failure exit code that you will get back from the cleanup tool in that type of scenario.
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UNATTENDED MODE
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The .NET Framework cleanup tool supports running in silent mode. In this mode, the tool will run and only show a
progress dialog during removal, but will require no user interaction. Unattended mode requires the user to pass
in a version of the .NET Framework to remove as a command line parameter. To run the cleanup tool in unattended
mode, you need to download the cleanup tool, extract the file cleanup_tool.exe from the zip file, and then run it
using syntax like the following:
cleanup_tool.exe /q:a /c:"cleanup.exe /p <name of product to remove> /u"
For example, if you would like to run the cleanup tool in unattended mode and remove the .NET Framework 1.1, you
would use a command line like the following:
cleanup_tool.exe /q:a /c:"cleanup.exe /p .NET Framework 1.1 /u"
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EXIT CODES
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The cleanup tool can returns the following exit codes:
* 0 - cleanup completed successfully for the specified product
* 3010 - cleanup completed successfully for the specified product and a reboot is required to complete the
cleanup process
* 1 - cleanup tool requires administrative privileges on the machine
* 2 - the required file cleanup.ini was not found in the same path as cleanup.exe
* 3 - a product name was passed in that cannot be removed because it is a part of the OS on the system
that the cleanup tool is running on
* 4 - a p
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